SOUNDING ELECTRODE ASSEMBLY (VERSIONS) AND UNDERGROUND RESERVOIR FLUID MEDIUM SAMPLING METHOD USING SOUNDING ELECTRODE ASSEMBLY Russian patent published in 2010 - IPC E21B49/10 

FIELD: oil-and-gas industry.

SUBSTANCE: sounding electrode assembly execute fluid medium sampling from a borehole, going through underground reservoir with a fluid medium, located beyond a contaminated fluid medium layer, surrounding the borehole. The sounding electrode assembly contains a case, executed with ability to move forward from down hole equipment and a located in the case parker, with a distal surface for the full contact with the borehole section. The parker has internal and external peripheries, at that the external one limited with a channel, going through the parker. The parker additionally equipped with a channel (channels) executed in the distal surface and located with ability to limit a ring cleaning intake nozzle between the internal and the external peripheries. A bypass channel goes through the parker for natural fluid medium bypassing and/or the contaminated fluid medium between channels. In the parkers channel a sampling tube installed densely for the natural fluid medium bypassing to the second intake hole of the case and to equipment.

EFFECT: providing of required compacting with the reservoir, increase of clean fluid medium flow into the equipment, fluid medium flow into the instrument optimisation.

26 cl, 42 dwg